id say every other day, sperm can live for up to 5 days in the vagina although alot of it dies by day 3. You can have sex everyday if you like but that can cause unnecessary strain physically and mentally. Also LH strips will be alot more affective at telling you your ovulation day, you can ovulate 12-48 hours after a peak LH strip x
Tonight, Saturday, Sunday and Monday and to be safe Tuesday xx